EP3576977B1 - Siège enfant réglable électriquement, destiné notamment à être fixé sur un siège de véhicule à moteur - Google Patents

Siège enfant réglable électriquement, destiné notamment à être fixé sur un siège de véhicule à moteur Download PDF

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Publication number
EP3576977B1
EP3576977B1 EP18704458.1A EP18704458A EP3576977B1 EP 3576977 B1 EP3576977 B1 EP 3576977B1 EP 18704458 A EP18704458 A EP 18704458A EP 3576977 B1 EP3576977 B1 EP 3576977B1
Authority
EP
European Patent Office
Prior art keywords
seat
spindle
gear
electric motor
worm wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18704458.1A
Other languages
German (de)
English (en)
Other versions
EP3576977A1 (fr
Inventor
Miriam Kaeshammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3576977A1 publication Critical patent/EP3576977A1/fr
Application granted granted Critical
Publication of EP3576977B1 publication Critical patent/EP3576977B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2821—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle having a seat and a base part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2875—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle inclinable, as a whole or partially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing

Definitions

  • the present invention relates to an electrically adjustable child seat, in particular for mounting on a motor vehicle seat.
  • Child seats for use in motor vehicles are known from the prior art, in which a seat shell is manually adjustable relative to a seat frame.
  • the child seat has two or more locking positions in which the seat shell can be locked.
  • the disadvantage of such an embodiment is that while driving in the motor vehicle the position of the seat shell cannot be adjusted manually by the driver, or can only be adjusted manually with a great safety risk.
  • the driver is forced to drive into a parking space, if necessary, in order, for example, to safely adjust the seat shell from a sitting position to a sleeping position, for example if the toddler fell asleep while driving.
  • the child will wake up again due to the shock of the seat shell when the seat shell is manually adjusted to a different latching position.
  • the inventive child seat comprises the features of claim 1. Further developments of the invention are the subject of the subclaims.
  • the child seat according to the invention in particular for use in a motor vehicle, has the features of the independent claim
  • the advantage that the electric motorized adjustment of the seat shell relative to the seat frame of the child seat is possible without risk even while driving without an intermediate stop. This allows the driver to drive more relaxed when accompanied by a small child - especially on the motorway. If the child fell asleep while driving, the driver can, for example, adjust the seat shell from a sitting position to a sleeping position without the child waking up.
  • the position of the seat shell can be continuously adjusted - and thus the optimal sitting or sleeping position can be set.
  • the electric motor preferably drives a threaded spindle which is arranged between the seat frame and the seat shell.
  • the spindle is attached to the seat frame on one side and to the seat shell on the other side, so that the seat shell can be pivoted relative to the seat frame when the spindle is actuated.
  • the electric motor is arranged on the stationary seat frame, and the other end of the spindle, or a corresponding adjustment element, is arranged on the seat shell.
  • the threaded spindle does not perform a pure linear movement.
  • the electric motor and / or also the adjusting element is therefore particularly advantageously fastened to the seat frame and / or to the seat shell in a rotatable manner. If, for example, a rotating spindle is used, it interacts with a spindle nut as an adjusting element, whereby the distance between the spindle nut and the electric motor can be changed in order to execute a relative movement of the seat shell with respect to the seat frame.
  • guide rails are formed on the seat frame, in which the seat shell is guided.
  • a rotary or pivoting movement can also be implemented between the seat shell and the seat frame, for example. This allows the child to be turned from an upright sitting position to a more horizontal sleeping position.
  • the spindle nut is arranged, for example, directly under the seat surface of the seat shell.
  • the seat shell With a minimum distance between the spindle nut and the electric motor, the seat shell is in an upright sitting position, whereas with a maximum adjustment of the spindle nut with respect to the electric motor at a maximum distance, the seat shell assumes a sleeping position in which the child lies as flat as possible in the seat shell.
  • the adjusting drive is particularly compact if the electric motor has an armature shaft on which an output element is arranged that directly drives a spindle gear for adjusting the threaded spindle.
  • the output element is designed, for example, as a worm that meshes with a corresponding worm wheel of the threaded spindle
  • such a spindle drive can advantageously also be designed to be self-locking.
  • the spindle drive can also be designed to be directly self-locking.
  • any position of the seat shell can be reliably fixed via the worm gear.
  • the worm and the worm wheel are mounted in a very compact gear housing of the worm gear, which connects the electric motor with the threaded spindle to be driven.
  • a crash-proof cage preferably made of metal, is particularly advantageous around a gear housing made of metal, which prevents the spindle from being torn out of the gear housing.
  • the gear housing can also be made of metal in a crash-proof manner.
  • the crash-proof cage / gearbox housing is also fastened in a crash-proof manner to the seat frame or to the seat shell by means of a first hinge pin.
  • a bore for the first hinge pin can be arranged in one piece with the crash-proof cage or within this cage.
  • the spindle drive is designed as a rotating spindle in a particularly space-saving manner, the first axial end of which rests against an axial stop within the gear housing.
  • the worm wheel is non-rotatably connected to the threaded spindle so that the threaded spindle rotates but does not move axially.
  • the spindle nut is displaced on the threaded spindle, whereby the distance between the adjusting element and the electric motor changes. Due to the axial support of the threaded spindle within the gear housing, in contrast to the use of a penetrating spindle, installation space for the threaded spindle is only necessary on one side of the gear housing.
  • the spindle nut is attached, for example, to an open end of an adjusting tube, so that the threaded spindle rotates through the spindle nut into the adjusting tube.
  • a spindle drive can be arranged completely below the seat shell without the spindle extending beyond the seat shell in the axial direction.
  • the adjustment tube is advantageously designed as a steel tube that has a second bore for the second hinge pin directly at the opposite end.
  • the electric motor of the child seat in the motor vehicle can particularly advantageously be supplied directly with the on-board voltage of the motor vehicle.
  • a connection cable is formed on the electric motor that can be connected to the car battery, for example.
  • a plug is formed at the end of the connection cable, for example, which can be inserted into the cigarette lighter in the motor vehicle.
  • the electric motor is operated, for example, with approx. 12 volts; alternatively, another voltage (48V, 110V, 220V) can also be used.
  • an operating element is arranged on this, on which at least the two directions of rotation of the electric motor can be controlled.
  • the motor can be started by actuating the control element once, which then runs until it has reached a predeterminable end position.
  • This can be implemented, for example, in the same way as operating an automatic window pane.
  • the control element is preferably integrated in the connection cable of the child seat so that the driver has easy access to the control element even while driving.
  • control element can also be designed as a wireless remote control, the control switch of which is arranged, for example, on the steering wheel or on the fittings of the motor vehicle.
  • a seat heater in the seat shell can also be supplied with electrical energy via the connection cable.
  • the plug - which can be plugged into the cigarette lighter, for example - can be used to operate both the electric motor for adjusting the seat shell and the child seat heater for the seat shell at the same time.
  • the seat shell can be adjusted by an electric motor from an initial position in the sitting position, preferably into an end position of the lying position.
  • any positions between these two end positions can also be set, since the electric motor can be stopped in any position of the seat shell.
  • any preferred positions can be preset that are specifically approached by the electric motor.
  • the electromotive adjustment has the advantage that any position can be continuously adjusted, with the adjustment device also reliably securing every position at the same time, in particular through the use of a self-locking gear unit (worm gear and / or spindle gear).
  • the electric motor can be operated in a so-called weighing mode, in which the seat shell is constantly moved back and forth between two predeterminable positions over a longer period of time in order to put the child to sleep.
  • a child seat with such a weighing mode can, for example, also be used outside the motor vehicle in the living area, the electric motor here for example is operated by means of a rechargeable battery, or has a plug for a household socket.
  • a compact reduction gear and on the other hand a self-locking gear for fixing the seat shell can be made available. If the worm wheel is mounted on the gear spindle inside a gear housing, the worm wheel can be reliably held in the gear housing by means of lock washers when crash forces occur.
  • the worm wheel preferably rests with its end face directly on the locking washer, which is made in particular of metal.
  • the worm wheel can be sprayed onto the external thread of the threaded spindle in a rotationally fixed manner in a particularly advantageous manner, the form shot preventing the rotatable spindle from being torn out of the gear housing with respect to the axial direction.
  • the worm wheel is rotatably arranged with an internal thread on the corresponding external thread of the threaded spindle, the interengaging threads representing the form fit with respect to the axial crash protection.
  • Fig. 1 shows a child seat 10 for a baby or toddler, as it can be used for transporting children in motor vehicles.
  • the child seat 10 has a seat frame 14 in which a seat shell 12 is movably mounted.
  • the child seat 10 is placed on a motor vehicle seat 11 with the seat frame 14, for example, and is preferably fastened by means of a seat belt.
  • a guide structure 16, which interacts with guide elements 17 of the seat shell 12, is formed on the seat frame 14.
  • the seat shell 12 can be rotated or pivoted relative to the seat frame 14, so that the seat shell 12 can be adjusted from a sitting position to a sleeping position.
  • such a pivoting between the sitting and sleeping positions takes place by means of an electric motor 20.
  • the electric motor 20 drives a threaded spindle 24 which interacts with an adjusting element 26.
  • the electric motor 20 is fastened to the seat frame 14, and the adjusting element 26 is fastened to the seat shell 12.
  • the distance 25 between the electric motor 20 and the adjusting element 26 is changed, so that the seat shell 12 is thereby Guide elements 17 in the guide structure 16 of the seat frame 14 is displaced.
  • Both the electric motor 20 and the adjusting element 26 are here both articulated to the seat frame 14 or to the seat shell 12.
  • the adjustment movement can also perform a certain rotary movement or pivot movement at the same time, deviating from a pure linear movement.
  • the adjusting element 26 is designed, for example, as a tube 48, at one end 46 of which a spindle nut 28 is arranged.
  • the threaded spindle 24 can be screwed through the spindle nut 28 into the tube 48 in order to change the distance 25 between the electric motor 20 and the adjusting element 26.
  • a second bore 51 is formed at the opposite end 47 of the tube 48, for example, via which the tube 48 is articulated with a second hinge pin 50 of the seat shell 12 is connected.
  • a first bore 36 is formed on the electric motor 20 and receives a first hinge pin 38, which connects the electric motor 20 to the seat frame 14 in an articulated manner.
  • the electric motor 20 drives the threaded spindle 24 via a spindle gear 30, which is arranged here directly on the electric motor 20.
  • the electric motor 20 is supplied with power via a connection cable 52, which can be connected to an energy source in the motor vehicle 11.
  • a plug 54 is formed at the end of the connection cable 52 and can be plugged into the so-called cigarette lighter 55 in the motor vehicle 11.
  • an operating element 56 is formed in the connection cable 52, with which the electric motor 20 can be controlled in order to adjust the seat shell 12 with respect to the seat frame 14 by an electric motor.
  • Preferred positions of the seat shell 12 can be specified.
  • an initial position with a minimal distance 25 between the electric motor 20 and the adjusting element 26 can be specified as the seat position.
  • a position with a maximum distance 25 between the electric motor 20 and the adjusting element 26 can be specified as the lying position.
  • the operating element 56 can be designed in such a way that the start position or the end position of the seat shell 12 is automatically assumed by pressing a button.
  • a weighing mode can also be entered on the operating element 56, in which the seat shell 12 is constantly moved back and forth between two predeterminable positions over a longer period of time.
  • the electric motor 20 can also be controlled by means of a remote control, the operating part of which can also be arranged in particular on the dashboard or in the steering wheel of the motor vehicle 11.
  • a child seat heater 60 can also be operated via the connection cable 52 in order to control the temperature of the child accordingly.
  • a flexible power cable 58 can be arranged between the electric motor 20 and the seat shell 12 for the power supply of the child seat heater 60.
  • Fig. 2 is a sectional view of a further embodiment of an electromotive adjustment unit 15 is shown.
  • the electric motor 20 has an armature shaft 21 on which an output pinion 22 is arranged.
  • the output pinion 22 is designed here as a worm 23 which meshes with a worm wheel 40 which sets the threaded spindle 24 in rotation.
  • This worm gear 31 between the electric motor 20 and the threaded spindle 24 represents the spindle gear 30, which is mounted in a gear housing 32.
  • the worm wheel 40 is arranged non-rotatably on the threaded spindle 24, which rests with one axial end 42 against an axial stop 44 in the gear housing 32.
  • the worm wheel 40 is rotatably mounted in the gear housing 32 and secured against displacement in the axial direction 62.
  • a so-called crash cage 34 is formed around the gear housing 32, from which the threaded spindle 24 cannot be torn out even in the event of a violent rear-end collision.
  • a crash bar can also be used as the crash cage 34, which only secures the spindle with respect to the crash forces in the axial direction 62.
  • the crash bar / cage 34 is preferably made of metal, which encloses the plastic transmission housing.
  • the crash bar / cage 34 is made here in particular from two parts 41, 43 which are screwed or welded to one another by means of connecting screws 35.
  • the first part 41 can be designed as a U-shaped bracket or an open cage, which is closed with the second part 43 as a type of locking washer 33 through which the threaded spindle 24 protrudes.
  • the first bore 36 is arranged within the crash cage 34 or the crash bracket, so that the first hinge pin 38 also remains reliably within the crash cage / bracket 34 in the event of a crash.
  • the tube 48 is designed, for example, as a steel tube, which is also connected to the seat shell 12 in a crash-proof manner via the second hinge pin 50, the seat shell 12 is reliably connected to the seat frame 14 - regardless of the orientation in or against the direction of travel of the motor vehicle 11.
  • the gear arrangement 31, 30 is designed to be self-locking, so that when the electric motor 20 is switched off, the seat shell 12 remains reliably positioned and secured in any desired adjustment position via the worm gear 31 and / or the spindle gear 30.
  • Such a spindle drive thereby enables a stepless positioning of the seat shell 12 with respect to the seat frame 14.
  • the rotating spindle 24 is driven via a double worm gear 31.
  • the electric motor 20 drives a first worm 83 which is manufactured in one piece or separately from the armature shaft 21.
  • the first worm 83 meshes with a first worm wheel 80, which is mounted on an axis 81 perpendicular to the armature shaft 21.
  • the first worm wheel 80 is non-rotatably connected to a second worm 42 which meshes with the second worm wheel 40, which - as in the embodiment according to FIG Fig. 2 - Is arranged on the threaded spindle 24.
  • the threaded spindle 24 runs approximately parallel to the armature shaft 21 of the electric motor 20, whereby a very compact spindle drive with a very large reduction is made available.
  • a high level of self-locking of the spindle drive 30 is achieved.
  • the second worm wheel 40 is again rotatably mounted in the gear housing 32 and fastened in a rotationally fixed manner on the threaded spindle 24.
  • the second worm wheel 40 is sprayed directly onto the outer profile 37 of the threaded spindle 24.
  • the outer profile 37 on the circumference of the gear spindle 24 can be formed within the second worm wheel 24 in such a way that it has a larger outer diameter than the inner diameter of an axial locking washer 33, which serves as a crash safety device.
  • the axial locking washer 33 surrounds the threaded spindle 24 over its entire circumference. If large tensile forces act in the axial direction 62 on the gear spindle 24, in which the first plastic worm wheel 40 is destroyed, the outer profile 37 of the threaded spindle 24 in the area of the first worm wheel 40 rests axially on the locking ring 33 and can therefore not be torn out of the gear housing .
  • no crash cage 34 is arranged around the gear housing 32, but the gear housing 32 itself is made of a stronger material than the worm wheel 40, for example a fiber-reinforced polyamide.
  • the securing ring 33 is made of metal and preferably simultaneously serves as an axial stop for the second worm wheel 40.
  • the securing ring 33 is supported within the gear housing 32 and lies axially directly against an end face 39 of the second worm wheel 40.
  • the outer profile 37 within the second worm wheel 40 can be manufactured in one piece with the thread of the threaded spindle 24, or it can be screwed onto the thread of the threaded spindle 24 as a separately manufactured ring.
  • the second worm wheel 40 can also be sprayed directly onto the normal thread of the threaded spindle 24.
  • the thread can also have a radial recess in order to produce a larger form fit between the worm wheel 40 and the threaded spindle 24 in the axial direction 62.
  • At least one eyelet is formed on the gear housing 32 as a first bore 36, into which a first hinge pin 38 engages. This first hinge pin 38 articulately connects the spindle drive to the seat frame 14 of the child seat 10.
  • a corresponding hole 19 for the first hinge pin 38 is formed on the seat frame 14.
  • a second bore 51 is also formed on the spindle nut 28, into which a second hinge pin 50 engages in order to connect the spindle drive to the seat shell 12 of the child seat 10 in an articulated manner on the other hand in a crash-proof manner.
  • a corresponding receptacle 13 for the second hinge pin 50 is formed on the seat shell 12.
  • the threaded spindle 24 rotates with the second worm wheel 40, but is not displaced axially. Rather, the axial end 42 of the threaded spindle 24 is supported on an opposite axial stop 44 in the gear housing 32.
  • the spindle nut 28 is adjusted with the rotational movement of the threaded spindle 24 in the axial direction 62 of the spindle 24. With the adjustment movement of the spindle nut 28, the seat shell 12 is adjusted relative to the seat frame, whereby the articulated connection of the spindle drive can convert its linear movement into an arcuate relative movement along the guide 16, 17 between the seat frame 14 and the seat shell 12.
  • a so-called “penetrating threaded spindle” can also be used, in which the threaded spindle 24 is displaced axially through the worm wheel 40 without the threaded spindle 24 rotating.
  • the end of the The threaded spindle 24 can be fastened directly to the seat shell 12 by means of the second bore 51 with the second hinge pin 50.
  • the corresponding receptacle 13 for the second hinge pin 50 is again formed on the seat shell 12.
  • the first worm wheel 40 is rotatably arranged on the threaded spindle 24 and is rotatably mounted in the gear housing 32.
  • the first worm wheel 24 has an external toothing 27 into which a corresponding toothing of the first worm 22 engages in a driving manner.
  • the worm 22 can be driven directly by the armature shaft 21 of the electric motor 20, or via a further gear stage.
  • the first worm wheel 40 rests axially on each of the two end faces 39 on a locking ring 33, which is mounted in the gear housing 32.
  • an axial spring element 88 is arranged between a securing ring 33 and the corresponding axial stop 44 on the gear housing 32, which element eliminates the axial play between the second worm wheel 40 and the gear housing 32.
  • the two circlips have a smaller inner diameter than the outer diameter of the external toothing 27 of the first worm wheel 40.
  • the corresponding end face 39 of the first worm wheel 40 is axially supported on the corresponding circlip 33 . which overlaps radially with the external toothing 27.
  • the worm wheel 40 engages the thread of the threaded spindle 24 over its entire axial length, so that the worm wheel 40 is held within the gear housing 32 in a crash-proof manner.
  • the gear housing 32 is again made of fiber-reinforced plastic so that the locking rings 33 remain fixed within the gear housing 32 in the event of a crash.
  • the gear housing 32 is, for example, made in two parts, with a housing cover 90 being placed axially on a housing shell 91, with both housing parts 90, 91 having axial openings 92, 93 which are penetrated axially by the threaded spindle 32.
  • the two housing parts 90, 91 are screwed together axially by means of housing screws 94, for example. Due to the break-proof design of the transmission housing 32, an additional crash bar or cage 34 can be dispensed with here.
  • the gear housing 32 directly has the first bore 36 into which the first hinge pin 38 engages in order to be connected to the seat frame 14 via the corresponding hole 19.
  • an electric motor 20 with a different gear design such as an eccentric gear or a planetary gear
  • the specific fastening of the adjusting element 26 and the spindle drive can also be varied, and for example the fastening on the seat shell 12 can also be interchanged with the seat frame 14.
  • the electric motor 20 can also be operated with its own rechargeable battery, so that the child seat 10 can also be electrically adjusted outside the motor vehicle - without a mains connection.
  • the battery can be structurally integrated into the child seat.
  • connection cable 52 can also be designed with a mains plug that can be connected to any socket, for example 220V or 110V in the house.
  • the child seat 10 can also be used in the house, for example with the weighing mode, as a "sleep-in cradle".
  • the electric motor 20 can be operated via an operating element 56 which is integrated into the connection cable 52 or directly into the child seat 10. It is also possible that the electric motor 20 can be controlled wirelessly by means of a remote control.
  • the spindle nut 28 is preferably fastened below a seat surface 13 of the seat shell 12, and has a maximum distance 25 in the lying position and a minimum distance 25 in the seated position from the electric motor 20.
  • the bore 36 for the first hinge pin 38 is advantageously formed directly in the gear housing 32 made of plastic, whereby the electric motor 20 is articulated together with the gear housing 32 on the seat frame 14 or on the seat shell 12 by means of the first hinge pin 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)

Claims (13)

  1. Siège enfant (10), destiné notamment à être fixé sur un siège de véhicule à moteur (11), comportant une coque de siège (12) qui est montée dans un cadre de siège (14) de manière pivotante par rapport à celui-ci pour le réglage de la position assise ou couchée, le mouvement relatif entre la coque de siège (12) et le cadre de siège (14) pouvant être effectué au moyen d'un moteur électrique (20) qui est relié fonctionnellement à une broche de transmission (24) par le biais d'une transmission à broche, et le moteur électrique (20) comprenant un arbre d'induit (21) qui entraîne une vis sans fin (23) qui s'engrène avec une roue hélicoïdale (40) qui est disposée sur la broche de transmission (24), la broche de transmission (24) coopérant avec un élément de déplacement (26) qui déplace la coque de siège (12) par rapport au cadre de siège (14), l'élément de déplacement (26) étant relié directement à la coque de siège (12), et le cadre de siège (14) comprenant une structure de guidage (16) dans laquelle des éléments de guidage (17) de la coque de siège (12) sont guidés, le moteur électrique (20) étant monté de manière articulée dans le cadre de siège (14), et l'élément de déplacement (26) étant réalisé sous forme d'écrou de broche (28) qui est fixé de manière articulée à la coque de siège (12) d'un côté et reçoit la broche de transmission (24) de manière mobile en rotation de l'autre côté.
  2. Siège enfant (10) selon la revendication 1, caractérisé en ce que la broche de transmission (24) est reliée au moteur électrique (20) par le biais de la transmission à broche (30) réalisée sous forme de transmission à vis sans fin (31), la roue hélicoïdale (40) étant disposée de manière solidaire en rotation sur la broche filetée (24), la broche filetée (24) s'appuyant sur une butée axiale (44) par une extrémité axiale (42) à l'intérieur d'un carter (32) de la transmission à vis sans fin (31).
  3. Siège enfant (10) selon la revendication 1 ou 2, caractérisé en ce que l'écrou de broche (28) est disposé à l'extrémité (46) d'un tube (48) dans lequel la broche filetée (24) peut être vissée, le tube (48) étant monté, de préférence sur la coque de siège (12), de manière pivotante par le biais d'un deuxième axe d'articulation (50) .
  4. Siège enfant (10) selon l'une des revendications précédentes, caractérisé en ce que la roue hélicoïdale (40) est disposée par un filetage intérieur de manière rotative sur le filetage de la broche filetée (24) de sorte que la broche filetée (24) puisse être vissée axialement à travers le filetage intérieur de la roue hélicoïdale (40) sans tourner, et une extrémité de la broche filetée (24) est fixée à la coque de siège (12) ou au cadre de siège (14).
  5. Siège enfant (10) selon l'une des revendications précédentes, caractérisé en ce que la transmission à broche est réalisée sous forme de transmission à vis sans fin double (31), la broche filetée (24) étant orientée approximativement parallèlement à l'arbre d'induit (21) du moteur électrique (20).
  6. Siège enfant (10) selon l'une des revendications précédentes, caractérisé en ce que le moteur électrique (20) comprend un câble de raccordement (52) qui peut être connecté à l'alimentation en courant électrique (55) du véhicule à moteur, en particulier par le biais d'un allume-cigarettes (54), ou le moteur électrique (20) peut fonctionner au moyen d'un accumulateur rechargeable qui est intégré de préférence dans le cadre de siège (14).
  7. Siège enfant (10) selon l'une des revendications précédentes, caractérisé en ce qu'un chauffage de siège (60) est disposé au niveau de la coque de siège (12), lequel chauffage peut fonctionner par le biais de l'alimentation en courant (55) du moteur électrique (20).
  8. Siège enfant (10) selon l'une des revendications précédentes 2 à 7, caractérisé en ce que la coque de siège (12) est déplaçable de manière continue par rapport au cadre de siège (14) et peut être fixée par rapport au cadre de siège (14) de manière sûre dans chaque position par le biais de la transmission à vis sans fin autobloquante (31), des positions préférentielles, par exemple les deux positions finales de l'écrou de broche (28) en tant que position assise ou couchée de la coque de siège (12), pouvant notamment être prédéfinies.
  9. Siège enfant (10) selon l'une des revendications précédentes, caractérisé en ce que le moteur électrique (20) peut être commandé dans un mode de balancement dans lequel la coque de siège (12) peut être déplacée continuellement suivant un mouvement de va-et-vient entre deux positions de consigne pouvant être prédéfinies.
  10. Siège enfant (10) selon l'une des revendications précédentes 2 à 9, caractérisé en ce que la broche de transmission (24) est montée de manière résistante aux collisions dans le carter (32) de la transmission à broche (30), la roue hélicoïdale (40) étant montée rotative dans le carter de transmission (32) et au moins une bague de fixation (33) étant disposée dans ou sur le carter de transmission (32), laquelle bague entoure la broche filetée (24) et bague contre laquelle s'appuie axialement la broche de transmission (24) par le biais de la roue hélicoïdale (40) lorsque des forces de collision surviennent, afin de ne pas être arrachée hors du carter de transmission (32), l'au moins une bague de fixation (33) étant de préférence fabriquée à partir de métal.
  11. Siège enfant (10) selon la revendication 10, caractérisé en ce qu'un profil extérieur (37) est formé à l'intérieur de la roue hélicoïdale (40) sur la broche filetée (24), profil sur lequel la roue hélicoïdale (40) est surmoulée, et de préférence le profil extérieur (37) présente un plus grand diamètre extérieur qu'un diamètre intérieur de l'au moins une bague de fixation (33).
  12. Siège enfant (10) selon l'une des revendications précédentes 10 et 11, caractérisé en ce qu'au moins un côté frontal axial (39) de la roue hélicoïdale (40) s'appuie axialement directement contre l'au moins une bague de fixation (33) comme rondelle de butée, l'au moins une bague de fixation (33) étant disposée à l'intérieur du carter de transmission (32), lequel est formé de préférence à partir d'une matière synthétique renforcée par des fibres.
  13. Siège enfant (10) selon l'une des revendications précédentes 2 à 12, caractérisé en ce que le carter de transmission (32) est entouré par une cage anti-collision (34), et un alésage (36) pour un premier axe d'articulation (38) est formé à l'intérieur de la cage anti-collision (34) ou sur la cage anti-collision (34), axe d'articulation à l'aide duquel le moteur électrique (20) est monté de manière articulée, de préférence sur le cadre de siège (14).
EP18704458.1A 2017-01-31 2018-01-29 Siège enfant réglable électriquement, destiné notamment à être fixé sur un siège de véhicule à moteur Active EP3576977B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201531 2017-01-31
PCT/EP2018/052136 WO2018141689A1 (fr) 2017-01-31 2018-01-29 Siège enfant réglable électriquement, destiné notamment à être fixé sur un siège de véhicule à moteur

Publications (2)

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EP3576977A1 EP3576977A1 (fr) 2019-12-11
EP3576977B1 true EP3576977B1 (fr) 2021-06-09

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EP (1) EP3576977B1 (fr)
CN (1) CN110214094B (fr)
DE (1) DE102018201329A1 (fr)
WO (1) WO2018141689A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230083296A1 (en) * 2021-09-14 2023-03-16 Henry Martinez Baby Car Seat
CN115848241A (zh) * 2021-09-24 2023-03-28 明门瑞士股份有限公司 儿童安全座椅及其角度电动调整装置
CN115257481B (zh) * 2022-06-30 2024-05-10 好孩子儿童用品有限公司 一种儿童汽车安全座椅

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043552A (en) * 1960-03-03 1962-07-10 Gen Motors Corp Power transmitting mechanism for vehicle seats
FR2553985B1 (fr) * 1983-10-28 1987-07-31 Ampafrance Siege d'enfant reglable, notamment pour automobile
ES286732Y (es) * 1985-04-24 1987-01-16 Play,S.A. Silla infantil inclinable
US20060181124A1 (en) * 2005-02-02 2006-08-17 Tina Kish Remote controlled baby seat
DE102006020174A1 (de) * 2006-05-02 2007-11-08 Robert Bosch Gmbh Getriebeeinheit mit einem Trägerrohr
WO2009141814A2 (fr) * 2008-05-21 2009-11-26 Chibbi Naaman Adaptateur de siège de véhicule ajustable
DE102009028536A1 (de) * 2009-08-14 2011-02-17 Robert Bosch Gmbh Spindelgetriebe sowie elektromotorischer Spindelantrieb
AU2013202977B2 (en) * 2012-05-09 2014-12-04 Britax Childcare Pty Ltd Child safety seat with improved recline base and adjustable headrest

Also Published As

Publication number Publication date
DE102018201329A1 (de) 2018-08-02
CN110214094A (zh) 2019-09-06
CN110214094B (zh) 2022-02-18
EP3576977A1 (fr) 2019-12-11
WO2018141689A1 (fr) 2018-08-09

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